A: Make sure that you backup your registry firstly and then do the following operations.

(1) Press Windows Button + R, type “regedit”, and then click OK.

(2) Navigate to the following registry subkey:

      HKEY_LOCAL_MACHINE > SOFTWARE > Microsoft > Windows > CurrentVersion > SideBySid

(3) Right-click, select NEW > DWORD (32 bit) Value

(4) Type PreferExternalManifest, and then press ENTER.

(5) Right-click PreferExternalManifest, and then click Modify.

(6) Enter Value Data 1 and select Decimal.

(7) Click OK. Exit Registry Editor.

(8) Download the following file to unzip, then put it to ZW3D installation directory.

http://dl.zwsoft.com/zw3d/PC/ZW3D/Tech/ProductRelease/ZW3D2016SP/ZW3D_4K_Solution.rar